I've just moved into a new apartment and am having trouble with a specific pot light in the main area.
There are 4 lights on the switch (all recessed), and they are all working fine except the one. When I moved in, the bulb (as well as a few others) were dead. I let the landlord know, and she brought over some new bulbs. I replaced the lights.
The problem one felt different than the others when replacing; with the others, getting the old one out and putting the new one in were a bit of a struggle. Wiggling the bulb back and forth out of the plug, almost feeling stuck. I was worried to pull to hard, lest I shatter the bulb. With the problem one however, it came out very easily, and the new one fit very easily as well. It almost didn't feel like it would stay in place if I let it go (though it did).
When I turned the lights on, the problem one had an issue with flicker-dimming. It would periodically go into fits of flickering, but not completely off, just dimmer. A day or 2 later, it was out again.
I opened up the fixture to check on it, and after moving it a bit, it came back on. But it had to stay in that exact position - anything else and it would turn off. It continued to do the periodic flicker-dimming.
Again, a few days later, and it was out. This time, no amount of moving it around would make it come back on. I don't want to go out and buy more bulbs to test it, just in case that isnt the issue.
The bulb in question is an MR16 50 Watt Halogen, the same as the rest. The fixture (and all others) claim to be rated for "42 Watts Max", though I've been unable to find MR16 bulbs less than 50W, and the rest of the lights seem to be doing fine.
Here's one of them that I replaced (though not the specific one in question):
Here's a photo of the fixture itself:
"50W" is mentioned on it a few times ("NW2000 50W","ISMR2000M/T 50W"), but I'm not sure what either of those mean.